Illicit drug usage at Historically Black Colleges and Universities (HBCU) is a topic of limited research. The research questions that guided this study were (a) What is the relationship between college policy on illicit drugs and students' frequency of drug usage after controlling for college location (urban or rural) and students' age, gender and GPA (b) What is the relationship between the availability of drugs and students' perception of drug usage effects on GPA after controlling for students' age, gender, GPA, college location and policy on drugs? Between two HBCUs, 93 Full-time Black students between 18 and 24 years old whose status was non-transfer and live on campus, took the online survey summer 2011. Students' response to the online survey instrument provided data on (a) frequency of drug usage; (b) gender; (c) perception of the effects of drug usage on GPA; (d) age; (e) GPA; (f) drug availability; (g) college policy on drugs and (h) college location. Data was collected and analyzed through descriptive statistics, bivariate analysis and ordinal regression. Based upon the results of the descriptive statistics analysis, majority of the students (50.5%) were from both an institution with no policy on drugs in an urban location. Majority of the sample was female 52.7%. The age for majority of participants was between 20 and 21. The highest GPA was between 2.0 and 2.4, a C average. The main areas of themes that emerged from participant responses included frequency of drug usage, drug availability and drug usage effects on GPA. In this study, the finding indicated that college policy on illicit drugs impacted students' frequency of drug usage. Controlling variable, student's GPA had a significant relationship with students' frequency of drug usage. The findings also indicated that there is no significant relationship between the availability of drugs and students' perception of drug usage effects on GPA. None of the controlling variables: college location, age, gender and GPA had a significant relationship with students' perception of drug usage effects on GPA. The frequencies to which students' use drugs are based on their campus policy on drugs. The findings of this study may have implications for educational stakeholders responsible for policies on drug usage. Educational stakeholders could use the findings of this study to foster and reframe teaching and learning. The findings of this study may help the participating colleges to focus on increasing student achievement through a comprehensive plan of college improvement through a policy on drug usage based on the students' perceptions and frequency of drug usage. Thus, the findings of this study may shed further light on drug policy development to support HBCU students. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]