They include vehicular manslaughter, driving without a license, and destroying evidence.
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Alvarez-Maravilla faces a sentence of up to four years in prison.
Gladding's family was in court during the proceeding.
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RELATED: Teen charged for hit and run that killed Clovis Unified Vice Principal Gavin Gladding
On Tuesday, the Fresno County District Attorney's office filed charges of accessory and destroying evidence against 18-year old Fernanda Lopez and 23-year old Moises Guerrero in the hit-and-run killing of Clovis Unified vice principal Gavin Gladding.
Attorneys for Guerrero and Lopez, said they pleaded not guilty to the charges in court on Wednesday.
RELATED: Fresno DA files accessory charges in hit-and-run killing of Clovis Unified vice principal