Category:Middle schools in Allentown, Pennsylvania

Junior High Schools (today's Middle Schools) were established in 1925 for grades six, seven and eight. The Central School building, which was used as Allentown High School from 1893-1916 was renovated and expanded with two additional buildings and was converted to a Junior High School. Francis D. Raub Elementary School opened in 1923 in the west end of the city. In 1925 it was also converted. In the 1st Ward, the Harrison grammar school for boys and the Morton grammar school for girls was consolidated, and in 1927, Harrison-Morton Junior High School was established.

From the 1929-1930 school year, the Junior High Schools began teaching 7th though 9th grade with the adoption of the 6-3-3 plan, and Allentown High School taught 10th though 12th grade. A major realignment of the Junior High School boundaries occurred for the 1967-1968 school year with the closure of Central and the opening of the new Trexler Junior High School. At the same time Central became a city-wide "Sixth Grade Center", with the primary grammar schools being realigned to grades K through 5. All sixth grade students in the ASD were sent to Central.

For the 1981-1982 school year, the "Middle School" concept was adopted by the ASD. Central was realigned to become a K-5 grade elementary school; Harrison-Morton; Raub; South Mountain and Trexler were renamed "Middle Schools" and taught grades six through eight. William Allen and Dieruff High Schools re-introduced the freshmen (9th grade) class and became 4-year high schools