National Center for Education Statistics - https://nces.ed.gov/programs/digest/current_tables.aspopens new window

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Statistical Abstract of the U.S.- http://statabs.proquest.com/sa/index.htmlopens new window

Example tables of interest:

http://statabs.proquest.com/sa/docview.html?table-no=304&acc-no=C7095-1.4&year=2015&z=5757DCF5E75B2AA1463CAA87362092228538D203&rc=1&seq=65&y=currentopens new window

http://statabs.proquest.com/sa/docview.html?table-no=308&acc-no=C7095-1.4&year=2015&z=D8B071C68D27C0BEC8A74B0997FD6BC46599A5B1&rc=1&seq=69&y=current#citationopens new window

http://statabs.proquest.com/sa/docview.html?table-no=307&acc-no=C7095-1.4&year=2015&z=79E945A566A9446976AE83611DFCC5E35F63C340&rc=1&seq=68&y=currentopens new window

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Oklahoma State Regents for Higher Education @ http://okhighered.org/index.shtmlopens new window

Example tables of interest:

http://okhighered.org/studies-reports/outcomes.shtmlopens new window

http://www.okhighered.org/studies-reports/enrollment/ClassLevel/2012-13%20UNDUP%20HC%20BY%20CLASS.htmlopens new window

http://www.okhighered.org/studies-reports/outcomes/Degrees%20Granted/2012-13PublicPrivateDegrees.htmlopens new window

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National Science Foundation @ http://www.nsf.gov/statistics/sed/2013/start.cfmopens new window

Example tables of interest:

http://www.nsf.gov/statistics/sed/2013/data-tables.cfmopens new window

http://www.nsf.gov/statistics/srvydoctorates/#tabs-3&infdsts&tabs-2opens new window

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National Center for Education Statistics @ https://nces.ed.govopens new window

Example tables of interest:

https://nces.ed.gov/statprog/handbook/sed.aspopens new window

https://nces.ed.gov/datatools/index.asp?DataToolSectionID=4opens new window

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Council of Graduate Schools @ http://cgsnet.orgopens new window

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Crossref.org @ http://www.crossref.orgopens new window