Okusama wa Joshikousei (TV)

The stories are similar - love and marriage between teacher and student.There're also and many ecchi moments in the both animes 

Both focuses on student and teacher relationship. Both contains Male teacher and female student and the teacher have a strong and caring character and is bold. The female lead wants to have sexual contact with the teacher despite her guardian forbidding any sexual contact . 

Both have the same romance where both parties have to keep their relationship a secret from everyone else at school, the exception, Okusama ga Seitokaichou is kinda rough, while Okusama wa Joshikousei was a little subtle.  

Similarities: -Teacher to student kind of relationships. -Relationship that has to be kept unwraps. -Panty flashes' and fanservices. Dissimilarities: - One only last 5 mins per 3 ep, while the other was a full length 13 ep. -One involves the girl getting grope reluctantly by the teacher , while the other doesn't have that. -Girl in one anime is a carnivore targeting her herbivore teacher, while the other one was unknown since the anime starts in which both teacher and his student wife were already in a relationship.  

They both gives me somewhat similar feelings and contains loli or little girls being married to older boys and the main female lead have strong love towards their husbands and The female lead wants to have sexual contact with the male lead. They both are obsessed with the word 'danna-sama'. In both series the couple stays together till the end no matter what happens. Both series contains Couple living under same roof. 

Same voice actor for main female character. Couple living under same roof. It simply gave me similar feeling. 

Similar themes of a male teacher living with a female student while trying to keep it a secret from everyone else out of fear of losing his job.The female lead wants to have sexual contact with the teacher despite her father forbidding any sexual contact . In Very Private lesson there are some differences from Okusama wa Joshikousei like the main male lead is not married to the female lead. The male lead is actually interested in a fellow female teacher, there is some action, more comedy and a little bit ecchi. 

Similarities: Same male teacher to female student arc. Same male tecaher who has to watch out for something that involves the female student. Disimilarities: One is more into romance and drama the other is more into comedy. The teacher in one anime actually is in a relationship with the feamle student, while the other is a mere suggested arc.  

Both anime treats the relationship between a teacher and student, however in "I my Me! Strawberry Eggs", it's more naive and man character plays a woman teacher while his student "fall in love" for him, thinking he is actually a woman. 

Both shows are about female who are married as high School students but have to hide that facts from their friends