These changes can come in many forms. Your child may need a different teacher. You may have one child who needs to be homeschooled while the rest are fine in an institutional setting. You may find a unique private school setting that is better suited to meet your family's needs. You may find homeschooling is really what you need even if you've started out the year in a public or private school. You may homeschool and have a child (or children) who wants to attend public school. You may homeschool and find the curriculum you are using isn't cutting it. Whatever it is, be open to making changes.
Let your children's needs guide your decision making. This time we have to raise them is so very short and so very precious. In the scheme of things we really have so little time to prepare them for the world. It is imperative that we use that time wisely.
Nothing matters more than giving your children the very best foundation on which to build their lives. No one is better suited to know what foundation your children need than you.