The training of pediatricians varies considerably across the world.

Vocational training varies considerably depending on the student's disability, but the options are limited for some.

The training and education of singing teachers varies widely.

Medical education and training varies considerably across the world.

Medical education and training varies around the world.

One result is that patients do not realize that the training and experience of doctors can vary widely.

Musical background and training varies from no formal training to very high levels (though rarely academic).

The training varies between men and woman.

The training and education of vocal coaches varies widely.

Some nannies are highly trained, but there is no restriction on the use of the word, so education, training, and experience vary greatly.