Ascari Academy is based at Ascari Race Resort. You can go from Ronda taking the A-367 road to Campillos village. The circuit is about ten kilometters from Ronda, and its access is well signposted close to the road at Km 30,5.
On their website you can see the program available, ask for prices, and you can order your reservation directly. This is a circuit which you should visit and drive. It's fully recommended because you will get a preferential treatment and very good feelings.