The 17-year-old students were arrested early Wednesday morning, according to the Maryland State Fire Marshal's office. They've been charged as juveniles with first-degree malicious burning and malicious destruction of property.
The teens poured a flammable substance on a section of the field and set it on fire Saturday morning, investigators said. It caused about $20,000 in damage, which wasn't discovered until Monday.
The suspects were released to the custody of their parents.
The field was installed just last year at a cost of $850,000.