For instance:

Our village elementary school has it's own extensive library, that is regularly expanded. All of the books were donated by the parents and they run the library checkout desk.

All of the teachers have brand-new computers and top-quality overhead projectors and the school has WIFI and a computer lab. All paid for, installed, and maintained by the parents.

One of the parents gives the 4th graders computer classes.

There is a "healthy Brotzeit" initiative, where the local farmers, butchers, supermarket and bakers sell their items to the school at reduced price, and the PTA arranges and serves a buffet once per week.

The parents hold a "clean up the playground" day, twice per year, where they revamp the garden, pick up litter, etc.

The playground has a climbing structure, a wooden amphitheater, a pretty fountain, and stable benches, also all paid for and built by the parents.

The children have regular school trips and group activities and are never charged more than €10/child. The parents association pays the rest.

One of the parents is a farmer and has created a "school garden", where the children grow vegetables and berries. They then can and sell their produce as a fundraiser.

They do the same with self-baked Christmas cookies.

On St. Nikolaus Day, the parents arrange for Nikolaus to visit the school and bring goodie bags and they serve homemade cookies and punch in the aula.

There is an art project with a hired artist and the winning pictures are auctioned off, for a fundraiser. I have one hanging in my living room.

Etc.

There are only about 80 children in the school. There are large schools that have none of this.