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For admission to PhD programs, a GRE score of 300+ is required and for the top colleges, a GRE score of 320+ is a must-have. Despite this, there are many universities outside the US which do not require GRE scores for admission. In this case, you may submit a GRE score to boost your application in the eyes of the Admissions Committee, but it is generally not a prerequisite.

The English language proficiency test scores for IELTS Academic, TOEFL iBT or PTE Academic are usually required for admission to any international PhD program.

Additionally, for admission to a PhD program, candidates are often selected on the basis of past research work, academic publishings and project proposals. @page { margin: 2cm } p { margin-bottom: 0.25cm; direction: ltr; color: #000000; line-height: 120%; orphans: 2; widows: 2 } p.western { font-family: "Liberation Serif", "Times New Roman", serif; font-size: 12pt; so-language: en-IN } p.cjk { font-family: "Noto Sans CJK SC Regular"; font-size: 12pt; so-language: zh-CN } p.ctl { font-family: "FreeSans"; font-size: 12pt; so-language: hi-IN } a:link { so-language: zxx } @page { margin: 2cm } p { margin-bottom: 0.25cm; direction: ltr; color: #000000; line-height: 120%; orphans: 2; widows: 2 } p.western { font-family: "Liberation Serif", "Times New Roman", serif; font-size: 12pt; so-language: en-IN } p.cjk { font-family: "Noto Sans CJK SC Regular"; font-size: 12pt; so-language: zh-CN } p.ctl { font-family: "FreeSans"; font-size: 12pt; so-language: hi-IN } a:link { so-language: zxx } @page { margin: 2cm } p { margin-bottom: 0.25cm; direction: ltr; color: #000000; line-height: 120%; orphans: 2; widows: 2 } p.western { font-family: "Liberation Serif", "Times New Roman", serif; font-size: 12pt; so-language: en-IN } p.cjk { font-family: "Noto Sans CJK SC Regular"; font-size: 12pt; so-language: zh-CN } p.ctl { font-family: "FreeSans"; font-size: 12pt; so-language: hi-IN } a:link { so-language: zxx } @page { margin: 2cm } p { margin-bottom: 0.25cm; direction: ltr; color: #000000; line-height: 120%; orphans: 2; widows: 2 } p.western { font-family: "Liberation Serif", "Times New Roman", serif; font-size: 12pt; so-language: en-IN } p.cjk { font-family: "Noto Sans CJK SC Regular"; font-size: 12pt; so-language: zh-CN } p.ctl { font-family: "FreeSans"; font-size: 12pt; so-language: hi-IN } a:link { so-language: zxx } @page { margin: 2cm } p { margin-bottom: 0.25cm; direction: ltr; color: #000000; line-height: 120%; orphans: 2; widows: 2 } p.western { font-family: "Liberation Serif", "Times New Roman", serif; font-size: 12pt; so-language: en-IN } p.cjk { font-family: "Noto Sans CJK SC Regular"; font-size: 12pt; so-language: zh-CN } p.ctl { font-family: "FreeSans"; font-size: 12pt; so-language: hi-IN } a:link { so-language: zxx }