By the Education Act 1902 the management of the York Street Board School was transferred from the Devonport School Board to the new Devonport Local Education Authority, which was actually the Education Committee of Devonport Borough Council.  Although the transfer was supposed to have taken place on Wednesday April 1st 1903, it actually happened on Monday June 1st 1903.  York  Street Elementary School had accommodation for 456 boys, 230 girls and 214 infants.

In 1914 Mr Thomas G Elliott was the master of the boys' school; Miss Bessie E Weeks was mistress of the girls' school; and Miss Minnie Holmes was mistress of the infants' school.  The average attendance at that time was 319 boys, 235 girls and 213 infants.

On and as from November 9th 1914, when Devonport was amalgamated with Plymouth, the School came under the management of the Plymouth Local Education Authority.

The Education Act 1918 raised the school-leaving age to the fourteenth birthday.

In 1937 Mr V T Pedlar was the head master of the boys' school and Miss N P Ware was the head mistress of the girls' and infants' school.

The Education Act 1944 raised the school leaving age to the fifteenth birthday as from Tuesday April 1st 1947 and created Primary schools for the 5 to 11 years olds and Secondary Modern, Grammar and Technical Schools.