The Edmonton teacher fired on Friday for violating his school鈥檚 鈥渘o zero鈥 policy says retirement is one of the options he is considering for his future.

Teacher Lynden Dorval received a letter dated Friday saying that his contract at Ross Sheppard High School will be terminated on Oct. 15.

In the letter local school board superintendent Edgar Schmidt said Dorval鈥檚 actions were 鈥渞epeatedly insubordinate, unprofessional and in disregard of lawful orders made by the principal.鈥

Dorval, a physics teacher for 35 years, was suspended in May for handing out marks of zero to students who did not complete their assignments.

The school鈥檚 policy, introduced two years ago, requires teachers to assign 鈥渂ehavioural codes鈥 -- such as 鈥淢PA鈥 for 鈥渕issed performance鈥 -- for incomplete work, rather than handing out zeros.

Principal Ron Bradley hassaid the practice of handing out behavioural codes instead of zeros was helping students learn.

But Dorval argued that his approach prepared students for the real world. He also said the school did not consult teachers before introducing the policy.

Dorval on Saturday told 麻豆影视 Channel that he is eligible to cash in his pension in 30 days, but he was aware that doing so would be an irreversible move.

鈥淚n the next few days I鈥檓 going to have to take a real hard look at my future,鈥 he said.

In an interview with CTV Edmonton Friday, Dorval said Schmidt鈥檚 termination letter was unnecessarily harsh.

鈥淲hy does he have to take shots at me like that? I don鈥檛 think it鈥檚 fair at all,鈥 Dorval said.

The school board declined comment when contacted by CTV Edmonton.