Most schools allow GMAT/GRE and require TOEFL/IELTS. Some schools do not require language tests and some schools do not accept GRE, so be sure to check your schools requirements!
I started somewhere in March/April, I planned to pass GMAT in July and start preparing for TOEFL and write essays in August. My GMAT Prep test result on July 7 was 730, so I wanted to improve SC and get 760 and more by the end of month. I had a decision map for my first GMAT exam:
740 and below – cancel, retake
750-760 – submit, retake
770 and above – relax.
Unfortunately life had its own plans. Initially I planned 2 week vacation in July before taking the GMAT and planned at least 0 points improvement from quant and mostly SC, but instead I got into hospital, and I was given certain pills to take for another 2-3 months, which clouded my thinking and overall I was more worried about my health that MBA, so half of July and whole of August were spent without any GMAT prep.
I took my exam in September, while preparing my essays and tackling health issues, 2 days before the exam I got 780 in GMATPrep and before that twice 750 (I purchased exam pack), my verbal scores were high, I usually made 1-3 mistakes and I was ready to get that sweet 99%, but instead I got 750 (98%), I mean, still not bad, but I didn’t have time to retake, as deadlines were close, and I already had to skip HBS and Yale.
Still, materials used:
Manhattan prep math bundle (5 books)
Manhattan prep SC (read 1,5 times, re-reading the most confusing bits)
Official guide 13 (the best score booster), which I reviewed using GMAT Quantum videos
For advanced quant:
GMATclub math tests
GMAT Hacks math questions by Jeff Sackmann
I didn’t use any special materials for CR and RC, as I had only one mistake in each during my first try and figured that OG will be enough.
So I focused on TOEFL, my prep was very limited, materials used:
i-courses.org mini test and
NoteFull.com free videos for answer structuring
Result 113 (Reading 30, Listening 29, Speaking 26, Writing 28).
So, good enough to start the application process!