Elementary Education Act 1870 further acts in 1876 ("the Sandon Act", which gave parents a legal obligation to ensure that their children were educated) and 1880 ("the Mundella Act") made attendance compulsory for children until they were 10 years old, with various exemptions. Many factory owners feared the removal of children as a source of cheap labour. However, with the simple mathematics and English they were acquiring, factory owners now had workers who could read and make measurements. Following continued campaigning by the National Education League, following the Elementary Education Act 1880, attendance to age 10 became compulsory everywhere in England and Wales. In
Raising of school leaving age in England and Wales in 2017 suggested a similar clear division between student attainment in grammar schools compared to comprehensive schools. Changes in society and approaches towards education, including equal opportunities, has meant that it is now recognised that all children deserve to have the same educational opportunities without singling out those who learn at a slower rate than others, thus every child has the opportunity to gain secondary school level qualifications or similar, regardless of background or intelligence. In 1964, preparations began to raise the school leaving age to 16. These were delayed in 1968, and eventually the decision was taken in 1971