A Head Start program in New York City piloted Cognitive ToyBox, a game-based assessment platform. In the 2017-2018 school year, four teachers used game-based assessments aligned to language and math goals described in the Head Start Early Learning Child Outcomes Framework. The findings and results support the idea that a combination observation and direct assessment approach can reduce the burden for teachers and increase the reliability and validity of child-level assessment data. (author abstract)