We are in the middle of SA too. They have given everyone six weeks to make their assessments and get in their reports so certainly won't be shorter than that! On the information we have been sent it says 26 weeks from original request.
Parental SA request (with school backing) made at beginning of January 2012. LA refused March 2012. LA conceded weeks before Tribunal hearing in September 2012. Draft Statement issued Winter 2012. Final Statement issued February 2013 with no provision at all for DS's 2 severest needs and inappropriate provision for other needs. Tribunal will be in two months time. So 18 months from start to end.