The sentences that are punctuated correctly are:
- “Those backpacks are my sisters,” Callie said.
- “Put your science projects next to the seventh graders’,” he instructed.
The other sentences have issues with punctuation in the possessive forms:
- “That dog is the Jones,’ ” should be “That dog is the Joneses’.”
- “Please hand out the worksheets to the students’,” should be “Please hand out the worksheets to the students.” (assuming you are not indicating a possessive form).