Why a 1,000-student gateway course has unusual obligations.

Many undergraduate science departments teach a large course that serves students from several majors and is a prerequisite for professional programs. In a gateway course like this, the grade can affect both progression through a degree and later admissions decisions.

Anatomy and physiology, in our region and in many others, is one such course. Students may take it while preparing for nursing, physician assistant, paramedic, athletic training, dental hygiene, or medical programs, although requirements differ. In the university lab program I coordinated, enrollment exceeded a thousand students per term. Decisions about such a course reach beyond the next semester's syllabus.

That fact, by itself, is not an argument for any particular curriculum choice. But it is an argument for treating curriculum changes in this course differently from curriculum changes in courses that do not serve fewer subsequent programs. The rest of this essay describes what that difference means for curriculum review.

Two kinds of academic decision

A useful distinction is between contained decisions and structural ones. A contained decision mainly affects one course and its students. An elective with no prerequisite role is one example. Problems still matter to those students, but a revision may require less coordination with other programs.

A structural decision affects a course that other programs depend on. A change in required content or assessment may influence students' preparation for later study, but those effects can take years to evaluate. Students may already have progressed to another program by the time a gap becomes apparent. That makes review and follow-up especially important.

These decisions need evidence proportionate to their reach. That means defining the intended improvement, testing it where feasible, and checking whether students remain prepared for the next course. It also means consulting the programs that receive those students.

Figure 1 · Programs connected to one gateway course

How a prerequisite affects later study

Consider a student applying to nursing school. An A&P grade contributes to the science GPA used in an admissions review. Meeting a published cutoff may make the student eligible, but it does not guarantee admission. Students who enter the program then complete further coursework and clinical training before seeking licensure, which includes the NCLEX-RN and other requirements.

Research has examined the relationship between pre-nursing academic performance and first-attempt NCLEX-RN success. Science GPA is one possible predictor, not a complete account of readiness. Findings vary across studies and programs.1

This does not show that harder courses produce better nurses, or that a particular curriculum change will affect patient care. The narrower point is that prerequisite grades and preparation matter to later programs. A curriculum committee should consider both when evaluating a change.

Access and preparation belong in the same discussion

Access is a central concern in gateway-course reform. High attrition in gateway STEM courses disproportionately affects first-generation students, students from historically underrepresented backgrounds, and students with less access to strong high-school preparation. These patterns deserve attention in course design and student support.2

Reducing content is not the only way to improve access. Research on high-structure course design examines frequent low-stakes assessment, guided preparation and practice, and instruction in how to monitor one's own learning. These approaches can narrow achievement gaps without reducing content. Eddy and Hogan found that the gap between historically underserved students and their peers narrowed by roughly half when course structure increased, while overall course rigor remained constant.3 The Theobald et al. meta-analysis in PNAS extended this finding across the active-learning literature.4

Rigor and access need not be opposing goals. Clear expectations, guided practice, and timely feedback can help more students meet demanding standards. Course structure is one contributor to achievement gaps, not a complete explanation for them.

A demanding course should provide the guidance and practice students need to meet its standards. Access and preparation belong in the same conversation.

What a gateway course owes its students

A gateway course owes its students three things, in roughly this order:

1. Predictive honesty. Students entering the course should understand how its grade may be used in later admissions decisions, and what a grade cannot predict. Include this guidance in the syllabus and direct students to current requirements for the programs they are considering.
2. Calibrated rigor. The level of demand should match the demands of the downstream programs, neither inflated for ceremonial reasons, nor deflated under pressure to improve pass rates. Calibration requires actually looking at what the downstream programs and the licensure exam ask students to do, and working backward.
3. Structural support. If the demand is high because the downstream demands are high, the course owes students scaffolding proportional to that demand: tutoring availability, study-skills instruction, frequent low-stakes assessment, and explicit guidance on how to study a subject many are encountering for the first time. The high-structure literature supports combining demanding work with this kind of guidance to help narrow achievement gaps.3

What such a course owes the institution

Two further obligations, both procedural:

1. Curricular conservatism by default. Changes to the course should be hypothesis-tested, not declared. That means pilot sections rather than wholesale rollouts; longitudinal outcome measurement rather than end-of-term satisfaction surveys; and reversibility built into the change from the beginning, in case the outcomes warrant it. The 2015 National Academies report on undergraduate science instruction makes a specific recommendation along these lines for high-stakes courses.5
2. Transparent reporting. The course should report available outcomes on a regular cycle: course pass rates, later program admissions, and licensure results where these can be responsibly linked and reported. Clear reporting lets reviewers examine the evidence behind decisions.

What this is not an argument for

The argument above is not a defense of the status quo. It is not an argument that the gateway course should never be revised. It is not an argument that lab-heavy is always right, or that reducing class size is the only honest reform, or that pedagogical experimentation should be discouraged. Several of those changes may be exactly what a particular gateway course needs, and some have evidence behind them stronger than the status quo.

The argument is for evidence proportionate to the decision. A change affecting several programs deserves consultation, a clear rationale, and follow-up. That is a way to improve change, not to prevent it.

A practical implication

Identify gateway prerequisites explicitly in the curriculum-review process. For proposed changes, ask which later programs depend on the affected learning goals. Require a rationale supported by relevant research, pilot data, or longer-term outcomes, together with a plan to evaluate the change.

This adds review and documentation work. The benefit is a clearer basis for deciding whether a change improves learning while preserving the preparation later programs expect. Neither its costs nor its benefits should be assumed; both can be reviewed.

References & further reading

1. For a recent representative review of the predictors of first-attempt NCLEX-RN success, see McCarthy, M. L., Harris, D., & Tracz, S. (2014). “Academic and nursing aptitude and the NCLEX-RN in baccalaureate programs.” Journal of Nursing Education, 53(3), 151–159. doi:10.3928/01484834-20140220-01. See also annual data briefs from the National Council of State Boards of Nursing (NCSBN), which report aggregate first-attempt pass rates and predictor relationships at scale: ncsbn.org/exams/exam-statistics-and-publications.
2. On gateway-course attrition and its disproportionate effect on historically underserved students, see Seymour, E., & Hunter, A.-B. (eds.) (2019). Talking About Leaving Revisited: Persistence, Relocation, and Loss in Undergraduate STEM Education. Springer. doi:10.1007/978-3-030-25304-2. The follow-up to the foundational 1997 study, with twenty-plus years of additional data confirming the pattern.
3. Eddy, S. L., & Hogan, K. A. (2014). “Getting under the hood: how and for whom does increasing course structure work?” CBE—Life Sciences Education, 13(3), 453–468. doi:10.1187/cbe.14-03-0050. The canonical study showing that increased course structure roughly halves the achievement gap for historically underserved students without lowering content demands.
4. Theobald, E. J., Hill, M. J., Tran, E., Agrawal, S., Arroyo, E. N., Behling, S., et al. (2020). “Active learning narrows achievement gaps for underrepresented students in undergraduate science, technology, engineering, and math.” Proceedings of the National Academy of Sciences, 117(12), 6476–6483. doi:10.1073/pnas.1916903117. The largest synthesis to date of how active-learning techniques interact with equity outcomes in undergraduate STEM.
5. National Research Council. (2015). Reaching Students: What Research Says About Effective Instruction in Undergraduate Science and Engineering. Washington, DC: National Academies Press. doi:10.17226/18687. The standard institutional reference for evidence-based instructional decision-making in undergraduate science programs.

Drafted May 2026.