This report examines issues in the scale-up of assessment software from the Center for Research on Evaluation, Standards, and Student Testing (CRESST). "Scale-up" is used in a metaphorical sense, meaning adding new assessment tools to CRESST's assessment software. During the past several years, CRESST has been developing and evaluating a series of software products to measure various types of learning. Collectively, these are called the Integrated Assessment System. The integrated simulation CRESST has developed includes both collaborative and individual concept mapping tasks, a problem-solving search task, an explanation task, and a metacognitive questionnaire. New tools should measure one or more aspects of the CRESST model of learning, be stand-alone or integrate with other tools, have authoring capacity, use automated scoring, and be Internet-deployable. Specifications are listed for eight proposed tools, and each is evaluated for the CRESST requirements. The tools are: (1) Collaborative Concept Mapper, a tool for group use; (2) Flowcharter, a tool to allow students to sequence events; (3) Idea Generator and Evaluator, a tool for group problem solving; (4) Model Simulator, a model building tool; (5) Networked Team Simulator, a team model builder; (6) Multimedia Concept Mapper, a multimedia tool for concept mapping; (7) Outliner, an organizing tool; and (8) Problem Solver, an instrument to measure problem solving processes. (Contains 4 tables and 13 references.) (SLD)