Table 5. Distribution of studies by STEM subject and research design

From

A Systematic Review of the Comprehension and Retention Level of STEM Subjects among Secondary School Students

Maria Christoforaki, Athina Karatza, Myrto Koutra-Illiopoulou, Anastasia Georgiou, Nelly Marosi, Eirini Chatzara, Evangelia Mavrikaki, Apostolia Galani

American Journal of Educational Research. 2026, 14(5), 149-158 doi:10.12691/education-14-5-4