Cambridge dictionary states that "education" can be both a singular noun like "an education" and an uncountable noun like "zero-article education". As far as I know it depends whether the context is general, for example "education" in the following context should be uncountable because it refers to a general meaning.
It's a disgrace that the government spends so much on guns and so little on education. (General meaning and an uncountable form.)
In the following example I guess they used the singular form because there is only one best route, and one child so it is a specific context.
A college education is often the best route to a good job.
I'm very fortunate to have had such a good education. (this is a specific education for one child)
I understand why they used the uncountable form with "full-time education" as it is a general context, but I don't understand why they used the singular form with "a good education"? Both are general and both should be uncountable (i.e. zero-article)
Most children in the UK remain in full-time education until they are at least 16 years old.
It's important for children to get a good education.