A practicum incorporating cooperative problem-solving and cooperative process writing was developed to improve attitudes toward writing and to improve writing skills. The participants, 28 heterogeneously grouped grade 12 students, worked in cooperative learning groups throughout a summer session to develop their writing and their problem-solving skills. Pre/posttests on problem solving were administered to the students as well as pre/post writing assignments. Results revealed the success of the program: (1) 75% of the target group improved their problem-solving ability and 29% improved their scores by 25%; (2) all the participants improved their writing ability and 32% improved their writing skills by 20%; and (3) based upon comparison of questionnaires, checklists, journals, and logs written during the semester, 80% showed at least a 30% percent improvement in attitude toward writing and school. (Thirty-six references and six appendixes containing questionnaires and pre/posttest results are attached.) (KEH)