A. A probationary term of service of three years in the same school division shall be required before a teacher is issued a continuing contract. School boards shall provide each probationary teacher except probationary teachers who have prior successful teaching experience, as determined by the local school board in a school division, a mentor teacher, as described by Board guidelines developed pursuant to § 22.1-305.1, during the first year of the probationary period, to assist such probationary teacher in achieving excellence in instruction. During the probationary period, such probationary teacher shall be evaluated annually based upon the evaluation procedures developed by the employing school board for use by the division superintendent and principals in evaluating teachers as required by subsection C of § 22.1-295. A teacher in his first year of the probationary period shall be evaluated informally at least once during the first semester of the school year. The division superintendent shall consider such evaluations, among other things, in making any recommendations to the school board regarding the nonrenewal of such probationary teacher's contract as provided in § 22.1-305. Any teacher hired on or after July 1, 2001, shall be required, as a condition of achieving continuing contract status, to have successfully completed training in instructional strategies and techniques for intervention for or remediation of students who fail or are at risk of failing the Standards of Learning assessments. Local school divisions shall be required to provide said training at no cost to teachers employed in their division. In the event a local school division fails to offer said training in a timely manner, no teacher will be denied continuing contract status for failure to obtain such training.