Ricky Schroder responded to his wife Andrea's divorce the ol' fashioned way ... with pen and paper.
Ricky did NOT have a lawyer file his answer to his wife's divorce ... he did it himself.
The actor is fine handing over physical custody to Andrea. They have 4 kids but only one, 15-year-old Faith, is a minor. Faith's been living with Andrea in Malibu since June, when the couple separated.
Not that this would ever happen ... but Ricky concedes he won't go after Andrea for spousal support.