(Salem, OR)  --  Teachers in the Salem-Keizer School District have reached tentative agreement on a new two-year contract avoiding a possible strike.  Under the proposed contract, teachers would get a six-and-a-quarter percent increase this year and a six-thousand-dollar retention bonus.  The second year of the contract has a three-and-a-half percent increase.  Negotiations have been underway for 11 months.  Teachers still need to approve the contract.