Presented is the final report of a 3-year project (1970-73) to provide vocational evaluation in a mobile unit for the 330 intellectually limited students in grade 10 special classes in the Baltimore County schools. Main project aims are given to be evaluation at home schools and subsequent development of recommendations for using school and community resources to help students attain economic independence. The literature on vocational improvement is reviewed, and investigations of mobile units are summarized. Described are the county, school system, special curriculum students, and community services. Service delivery by the mobile unit is seen to have included aspects such as unit design and preparation for arrival at schools. Explained is the evaluation system which involved sequential exploration of the student's history, level of functioning, and career potential through psychometric tests and work samples on five Tower system tasks (clerical work, electronics assembly, mail clerking, sewing, and workshop assembly). Among findings reported are significantly consistent, uniform, and standardized assessment in the mobile unit; improvement in student self concept due to individual appraisal of potential combined with recommendations; parents' approval of the evaluation; and extension of the evaluation to include all types of students. (Given in appendixes that consist of almost half the document are descriptions of program components, a profile of student characteristics, and representative evaluation forms.) (MC)