Is this sentence grammatically correct?

I think it’s about time schools change their longtime traditional starting hours to accommodate teenagers’ well-being.

It's o.k., but I'd insert "that" between "time" and "schools."

Do you need to keep "I think"? Or is it clear that this is your opinion you're stating?

And I agree with Ms. Sue about adding "that" in the sentence.

Another question I have is whether you need to keep both "longtime" and "traditional" in there. Since they mean the same thing, take one out.

I agree with Writeacher's suggestions.

Got it. thanks Ms. Sue and Writeacher!

yeah this is my opinion for a response on an article

You're welcome.

Yes, the sentence "I think it's about time schools change their longtime traditional starting hours to accommodate teenagers' well-being" is grammatically correct.

To determine the grammaticality of a sentence, you should check the following factors: subject-verb agreement, word order, verb tense, and punctuation. Let's break down the sentence to analyze its grammar:

1. Subject-verb agreement: The subject of the sentence is "schools," which is plural, and the verb "change" agrees with it.
2. Word order: The sentence follows a standard word order with subject-verb-object structure.
3. Verb tense: The verb "change" is in the present tense, which is appropriate for expressing a general sentiment or suggestion.
4. Punctuation: The sentence ends with a period, indicating a complete thought.

So, based on these criteria, the sentence is grammatically correct.