1900 – Pennsylvania State Teachers Association changes name to Pennsylvania State Educational Association.
1903 – Pennsylvania adopts first minimum salary law, setting the rate at $35 per month.
1906 – NEA drops the “al’ and becomes the National Education Association.
1909 – Nation’s first tenure law enacted.
1911 – Pennsylvania School Code is written.
1914 – First rural community vocational school opens in Indiana County.
1915 – First junior high school opens in Pittsburgh.
1917 – Public School Employees Retirement Bill provides that employees can apply for retirement at age 62, with retirement compulsory at age 70.
1919 – Woodruff Salary Act is passed giving higher pay to teachers in all Pennsylvania school districts and establishes a minimum salary of $65 a month for teachers.
1919 – State aid for the transportation of pupils is adopted, mandating that the state pay 50 percent of the transportation cost to consolidated schools.
1920 – PSEA drops the “al’’ and becomes the Pennsylvania State Education Association.
1921 – Legislature creates State Council of Education, combining functions of State Board of Education and the College and University Council.
1921 – Edmonds Act requires all elementary public school teachers to have two years training in normal schools and secondary teachers must have an A.B. degree.
1921 – First PSEA headquarters established at 10 S. Market Square, Harrisburg.
1925-27 – PSEA acquires properties for headquarters at 400, 402, and 404 N. Third St., Harrisburg.