This grammar has been in use worldwide for nearly 100 years. The book contains short lesson overviews as well as many good translation exercises. The entire book is now available through textkit.
Elaine Woodward and Marianne Pagos, teachers at Boston Latin School, have provided a concise handbook to assist you as you learn to read Classical Greek.
•Biblical Greek Online
These beginning grammars are works in progress and are all designed to teach Biblical Greek. You should look at them and determine which is best suited for your purpose.
John D. Schwandt, of New St. Andrews College, has developed an online Biblical Greek exam. If you teach a course in New Testament Greek, take a look at this to see if it would be a helpful resource for your class.