You don't use caps with it because it isn't a proper noun. If you wrote Mrs. Smith's second grade it still wouldn't have caps.
In the middle of a sentence, you don't capitalize second floor.
No. it's not necessary. It should be --- He is a fourth grade student.
No. Use italics if possible or underline and capitalize the genus (first word) but not the second (species). E.g. Alces alces
No it shouldn't be capitalized.
No. It's not necessary. It is capitalized at the beginning of the sentence or when it forms part of the proper noun. Examples: Marissa is in the first grade. First Grade Fashion School
Yes, you should capitalize "Second Grade" when referring to a specific grade level in a sentence, as it is a proper noun.
No
Well yeah .. Of course! Its a noun and proper noun ! Just pass the second grade and you'll understand!
It is not necessary to capitalize fifth grade.I just finished fifth grade.My teacher in fifth grade was kind.Fifth grade was easy.
No, you do not capitalize the second word in the complimentary closing.
No. It's not necessary.
No. It's not necessary.
In the middle of a sentence, you don't capitalize second floor.
No. it's not necessary. It should be --- He is a fourth grade student.
It is second grade or you can say 2nd grade.
No
No. Use italics if possible or underline and capitalize the genus (first word) but not the second (species). E.g. Alces alces