This report describes three model demonstration projects in Ohio school districts which focused on identifying types of gifted underachievers and providing them with services through unique instructional models. Provided for each program is information on: identifying characteristics (district, location, school population, project director); project goals, objectives and activities; project results; promising practices and recommendations; and project products. The first project is ACE: Achieving Cognitive Enhancement (Putnam County); which provides inservice training to classroom elementary teachers on the development of gifted students' higher order thinking skills using computers in the regular classroom. The second project is Helping Underachieving Gifted Students (Springfield). This project attempts to identify and serve gifted students in populations consistently underrepresented in the regular gifted enrichment program. The third project is in Rock River. It utilizes a "teacher as researcher" model in its goals of designing an identification process, providing learning options, monitoring students' progress, and disseminating project results. An epilogue notes common recommended practices of all three projects including the importance of staff development, multifactored evaluation, and the value of assessing learning styles. (DB)