Specific info on vivas:
Managing oral exams for students with disabilities (sic)
http://www.anu.edu.au/disabilities/#info
..
Academic standards is a more contentious issue various resources include:
Making reasonable adjustments for disabled students in higher education. Staff development materials: case studies and exercises
 http://www.nottingham.ac.uk/ssc/staff/randd_asdsds/Making%20Reasonable%20Adjustments.pdf
..
DDA issues
Examinations and Assessment: Good Practice Guide (DRC) (has a small section on academic standards)
http://www.drc-gb.org/businessandservices/examinations.doc
..
Sharp, K., and Earle, S. (2000) Assessment, Disability and the Problem of Compensation, Assessment and Evaluation in Higher Education, vol. 25, no. 2, pp. 191-199(9)
 
All these can be found by using the search term 'assessment' in the NDT resources directory:
http://www.natdisteam.ac.uk/rdsearch.html
 
There is also some advice in this online module on oral exams and oral presentations:
http://www.shu.ac.uk/services/lti/accessibleassessments/content/section_1/1.2.html#oe
 
And in case anyone has forgotten the Demos project!:
http://jarmin.com/demos/course/assessment/exams.html

Mike Wray
National Co-ordinator
National Disability Team
The Open University in the North West
351 Altrincham Road
Manchester, M22 4UN
Tel  0161 955 6930
Fax 0161 945 3356
email: [log in to unmask]