School Committee member Rick Wynn will leave the School Committee at the end of the month to focus on starting a new business, he said yesterday. Wynn served just over four years on the School Committee and was chairman much of last year, an eventful year for Natick schools. The seat will be filled by a person appointed jointly by the School Committee and selectmen. "I'm going to be in the process of trying to start a new business, and I just really have to dedicate all my energy trying to get that business off the ground," Wynn said. "And I need to save some time for my family, too." After being appointed to fill the vacancy left when Christine Van Amsterdam left the School Committee, Wynn won a three-year term in 2005. In March Wynn won a second full term on the board, but at the time said he did not think he would leave the board so soon. "I knew it was possible I wouldn't be able to finish the term, but I didn't know timing," Wynn said. "It came sooner than I thought." Wynn manages a private equity fund at Putnam Investments, but said his new business would be in a different field. He did not elaborate on his plans. School Committee Chairman Stephen Meyler praised Wynn's work as a member, especially his time as chairman from March 2007 to March 2008. During that year the School Committee found a new leader for the district, went to voters with a Proposition 2 1/2 override and dealt with the controversy over the Redmen nicknam ...