Yes and it was a fucking nightmare.
I was Chair of my child's preschool about 8 years ago, the old manager left and after interviewing we appointed one of the existing workers to the manager's post . She had the qualifications, experience, knew the kids, seemed perfect.
Within just a few months things started going wrong. She was trying to change absolutely everything about how things ran, whether there was an issue or not. She dictated to the other staff. She did not listen when the committee asked her to slow down the changes and be more consultative. It all came to a head when she had a huge falling out with another member of staff over an issue which was nothing to do with work and totally out of committee control. She refused to come back to work unless we sacked the other worker, who had been there for about 15 years. Obviously we couldn't do that and told her so. So she said that she'd have us for constructive dismissal.
Anyhow, it all rumbled on for a few weeks with lengthy phonecalls to ACAS - people don't seem to know that employers can get advice from them too and they were fabulous. Also we had a lot of help from the Pre-School Play Association which we paid an annual fee to and they provided phone support and advice too (which was basically that she didn't have a leg to stand on regarding constructive dismissal).
After she understood that we wouldn't be sacking the member of staff we had a problem with she handed in her notice. Phew.
Have to say though, it put a huge black cloud over my child's year at pre-school. As a committee member you are not paid to deal with that sort of shit and it was horrendously stressful and time-consuming, we had to do interviews with staff members to clear up the allegations the manager was making and I was spending 2 or 3 hours a DAY on it until it was resolved. Everyone's an expert, usually the people who haven't bothered their backsides to get onto the committee are the worst wading in with "advice".
So good luck. My advice having been through it is - get all the committee singing from the same song sheet. Use ACAS and any body you might be part of. (Professional legal advice is simply not affordable to most pre-schools). Follow your disciplinary processes to the letter. Tell parents you will not be able to speak to them about it at present.