The extent to which responders agree with a statement can be assessed adequately in many cases by the options:
1) Agree 2) Disagree

These options have the advantage of allowing for the expression of some uncertainty. Avoid using the expressions like
1) Strongly agree 2) Agree 3) Disagree 4) Strongly Disagree

Though these options do not bother some people at all, others find them objectionable. "Agree" is a very strong word; some would say that "Strongly agree" is redundant or at best a colloqualism. In addition, there is no comfortable resting place for those with some uncertainty. There is no need to unsettle a segment of responders by this or other cavalier usage of language.

Another problem can arise when a number of questions all use the same response categories. Try and be an optimist in certain situations. And if you are strongly with a view or belive that the reponse is strong affirmation then you would respond "tend to agree," indicating less than full endorsement of the statement, but that interpretation is certainly open to question. Others who would agree with your evaluation of the vocational education program might reluctantly mark "agree," because the statement is technically true.