What is the correct spelling of the plural possessive form of sister and business?
The plural form of the singular noun sister is sisters.
The plural form of the singular noun business is businesses.
To form the possessive of plural nouns that end with an "s", add an apostrophe after the "s" (s'):
The plural possessive for sisters is sisters'.
The plural possessive for businesses is businesses'.
My sisters' names are Linda and Lois.
The businesses' windows along Main Street are decorated for the holiday.
Plural: The correct spelling is customers. Singular Possessive: The correct spelling is customer's Plural Possessive: The correct spelling is customers'. Note apostrophes. When five customers entered the restaurant, Tom checked the customers' coats and took them to their table, while Sally waited on a regular customer and took that customer's order.
Both are correct. The spelling schools' is the possessive form of the plural noun schools. The spelling school's is the possessive form of the singular noun school. Examples: Both of our schools' teams will be in the finals. (plural possessive, the teams of two schools) Our school's mascot is at every game. (singular possessive, the mascot of one school)