
Given the following passage

"Salaries for Nursery, Primary and Secondary School teachers ranged from £20,133 to £41,004 in September 2007, although some salaries can go much higher depending on experience and extra responsibilities. Preschool teachers may earn £20,980 annually.[citation needed] Teachers in state schools must have at least a bachelor's degree, complete an approved teacher education program, and be licensed.",

answer the following question. Note that the answer is present within the text.

Question: Who of the mentioned teachers must abide by a stricter requirement? 

Teachers in state schools
