Web based non-downloadable software application used to assist entities that operate schools and school systems with implementation of teacher and school leader effectiveness programs by providing a comprehensive assessment and data management platform to analyze student test results and academic performance and the effectiveness of teachers and school leaders based upon customized variables, namely, teachers' and leaders' professional characteristics, professional knowledge, and participation in on-line professional development programs as defined by the customer, student demographics, classroom observation indicators defined and provided by the customer, and implementation of the customer's programs intended to impact student learning and instruction; Providing temporary use of web based non-downloadable software application providing professional development for teachers and school leaders in the form of lessons and strategies for instruction to improve student achievement and address identified weaknesses in student performance or teacher instruction; Web based non-downloadable software application providing online-professional development for teachers and school leaders in the form of lessons and strategies for instruction to improve student achievement and address identified weaknesses in student performance or teacher instruction