This paper describes a dataset with data from three individually randomized educational technology experiments on differentiation, formative testing and feedback during one school year for a group of 8th grade students in the Netherlands, using administrative data and the online motivation questionnaire of Boekaerts. The dataset consists of pre- and posttest scores for each experiment, as well as background information on the students, such as gender, age, ability, grade repetition and neighborhood characteristics. It also includes motivation of students. The dataset, or parts of it, could be interesting to use in future studies, focusing on effects of the use of educational technology, for comparison with similar and/or slightly different experiments, and for studies such as meta-analyses or replication studies, especially given the individual experimental setup.