It's completely your choice. However, when I was taking DD1 around (also with SN, and eventually went to a SS in the end), there was a school I was certain she was going to go to, and I was really only viewing the others to say that I had looked at all the schools. My friends all sent their children to that school, and had spoken of how warm and friendly the staff were, and how lovely it was.
-I got to the school and was kept waiting for over 20 minutes in the foyer. DD1 did not do waiting, and was climbing the walls after 5 minutes.
-They had decided to schedule my visit with another set of parents, despite knowing that DD1 had SN, without telling me in advance.
-When the HT came, he deferentially shook the hand of the other little girl, introduced himself and said 'we're trying to see if we can show you we're the right school for you, today'. He turned to us and said 'Hi DD1', then said 'Right, let's go.'
-DD1 wanted to play with a doll's house part way round the tour and got upset. The HT said 'oh leave her there and we'll come back for her'. I said 'she needs constant supervision! I'll catch you up.' He had been fully appraised of her needs by me before the tour by telephone.
-He waxed lyrical about his plans to upgrade the look of the school and how keen he was to encourage students to pick their coats up off the floor, then gave a dismissive wave as we passed a room, saying 'this is our SEN room.'
-He met with me after the tour and said that it would be my responsibility to get the best statement I possibly could for DD1, or they wouldn't be able to afford to help her.
My intended school was definitely out of the running.
I took her to my least favourite option.
-The deputy head was waiting for her at the door. She bent down on her knees and greeted DD1.
-She changed the tour route when DD1 wanted to go right and she was going to take us left.
-She arranged for someone to look after DD1 when she saw some colouring pencils in a classroom, so that I could continue looking around the school and leave DD1 in safety.
-As we looked around, she highlighted changes in security that would be needed to keep DD1 safe, and how she would achieve it.
-She made it clear that DD1 was wanted and would be valued.
-When I asked about the statement, she said that whatever was achieved would help, but at the end of the day, statement or not, they would give DD1 whatever help she needed.
That was the school DD1 would go to if MS was right for her.
As it happens, the LA felt SS would be best, much to our surprise, and we didn't have to fight for provision. But we would never have found out that information about the attitude of the schools without taking DD1 with us.