Retake: Do I need to retake all sections?

As the other posters have said...If you retake the GMAT, you must complete all sections over again. (They don't give the option to cherry-pick what sections you want to skip).

With that being said, if you're dissatisfied with your Quan & Verbal scores...study more on these sections because there is greater value placed on the Quant & Verbal than the AWA - at least, from a b-school perspective. (This is not to say that writing competence is unimportant, but b-schools typically use a candidate's aggregate score as a barometer for admission into their program...whereas, a candidate's AWA score is used as a minimum qualifier (i.e. at least a 4 or 5, etc).

Yes you should take all sections . Don't waste too much time on awa though , just follow the chineseburbed awa template and you should easily get a 4.5/5. The essays place more emphasis on structure rather than content

Posted from GMAT ToolKit

Yes, you have to retake everything. Verbal and Quant count the most because they create your score out of 800.

Thank you guys for your prompt response and precious time. I will retake all sections on May 12.
I've been studying for GMAT after my full time work and weekend.
With your advice and support, I feel like I could get better scores this time:)

Thanks again.