Old school and Socio-economic class

Old school noun - A class of people favoring traditional ideas.

Socio-economic class and old school are semantically related. In some cases you can use "Socio-economic class" instead a noun phrase "Old school".

Socio-economic class noun - People having the same social, economic, or educational status.

Old school and socio-economic class are semantically related. Sometimes you can replace phrase "Old school" with "Socio-economic class", this phrases are similar.