Evaluation typically involves: 1. Formative Evaluation: Conducted during the development or implementation of a program to improve its design and performance. 2. Summative Evaluation: Conducted after the completion of a program to assess its overall impact and outcomes. 3. Process Evaluation: Focuses on the implementation process to understand how the program was delivered and whether it was implemented as planned. 4. Outcome Evaluation: Assesses the short-term and long-term results of the program to determine its effectiveness.