That's not even a good sentence in English...
"School" in Spanish is "escuela".
¿Cómo estàs ustedes? is how you say "how are you doing everyone?" in spanish.
To say 'I am going to school' in Spanish, you would say 'Voy a la escuela.'
To say 'I am going to school' in Spanish, you would say 'Voy a la escuela.'
Hacer
This is how you say Saturday school in Spanish la escuela los sábados.
Doing good = haciendo bueno but this sounds terrible in Spanish. Generally speaking you should say "doing well" which is haciendo bien.
haciendo lo
Que hace?
¿Qué haces?
¿Qué haces?
Hago...