A $24 million plan to renovate and expand Old Greenwich School in a project that would solve problems ranging from accessibility to flooding has moved a step closer to reality. The Board of Education unanimously approved the guidelines at its meeting last Thursday. The next step is to seek approval for the project. Superintendent of Schools Toni Jones is expected to request $1.5 million in the proposed 2022-23 school budget for the design work. That would require approval from the Board of Education, Board of Estimate and Taxation and the Representative Town Meeting through next year’s budget process. If the design money were approved for Old Greenwich School, then the construction money would be requested in a budget for a later fiscal year, either 2023-24 or 2024-25. Only then would construction begin on the project. The final cost of the construction has not been determined, but the preliminary budget is slated at $24 million.