By the Education Act 1902 the management of Saint John Street National School was transferred from the National Society for the Education of the Poor in the Principles of the Established Church 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.  Saint Stephen's Church of England Elementary School* had accommodation for 150 and 112 infants.

In 1914 Mrs Hannah M Rundle was the mistress of the girls' school and Miss Emily A Phelps the mistress of the infants' school.  The average attendance at that time was 153 girls and 142 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 Miss C A Bailey was head mistress of the junior girls and infants' school.

The Saint John Street Church of England Elementary School was closed by 1937.