Simplify the following text for a Grade 7 native English-speaking person.
Original: General Thayer 's 1871 will provided for the creation of Thayer Academy , and on September 12 , 1877 , the academy opened its doors to 30 students in what is now Main Building .
Simplified: The school was made in 1871 , at the request of General Sylvanus Thayer . Thayer Academy is one of Greater Boston 's most well respected private school 's .