School Uniforms are to be worn to the school graduation ceremony.
School Uniforms are compulsory for the graduation ceremony.
"School Uniforms are to be worn to the school graduation ceremony." This explains to the person that they have to wear the schools uniform to the ceremony.
"School Uniforms are compulsory for the graduation ceremony." This explains that they have to wear school uniform. "Compulsory" means they have to.
"School Uniforms are to be worn to the school graduation ceremony."
（学校の卒業式には学校の制服を着ます）
これで卒業式には学校の制服を着ることを説明できます。
"School Uniforms are compulsory for the graduation ceremony."
（卒業式には学校の制服を着ることになっています）
これで卒業式は制服を着るという事を説明できます。
"Compulsory"とは義務と言う意味になります。
Typically, high school students just wear their uniforms to graduation.
High school students normally wear their school uniforms to the graduation ceremony.
To the graduation / to graduation - normally when referring to the ceremony, English speakers, or at least Americans, just say "graduation" more than "the graduation ceremony.
Typically / normally / usually / commonly - these are different words that mean what is normal; what occurs most often
To the graduation / to graduation
（卒業式には/卒業式へは）
- 普通、式典などの事を話す場合、ネイティブ、少なくともアメリカ人は
"the graduation ceremony"よりも単に "graduation"と言います。
Typically / normally / usually / commonly
（普通、いつもは、通常、大抵など）
-これらの言葉は、通常よくある事、普通の事を言う時に使います。
Standard dress for the garduation ceremony is school uniform
Required dress for the ceremony is school uniform
The dress code for the ceremony is school uniform
Different functions have different 'dress codes'. A dress code is the norm of attire to be worn at any one time. For example, if you work in a bank in the UK, you are expected to wear a shirt and tie and suit if you are man. Other work dress codes require everyone to wear a uniform: police, nurses, firemen. Children often complain about 'required dress' as even that may have constraints such as length of the school skirt to be no higher than knee level.
We just wear our regular school uniforms to graduation in Japan.
In Japan, we have to wear our regular school uniforms to graduation.
In Japan, they don't wear anything special to graduation. Just their regular school uniforms.
We just wear our regular school uniforms to graduation in Japan.
In Japan, we have to wear our regular school uniforms to graduation.
In Japan, they don't wear anything special to graduation. Just their regular school uniforms.
The outfit we wear in Japan for graduation is just our regular school uniforms.
We usually just wear our regular school uniforms for graduation in Japan.
We just wear our regular school uniforms to graduation in Japan.（日本では卒業式には普通の制服を着ていきます）
In Japan, we have to wear our regular school uniforms to graduation.（日本では卒業式には普通の制服を着ていかないといけません）
In Japan, they don't wear anything special to graduation. Just their regular school uniforms.（日本では卒業式には特別なものは着ていきません。普通の制服です）
The outfit we wear in Japan for graduation is just our regular school uniforms.（日本では卒業式に着るのは普通の制服です）
We usually just wear our regular school uniforms for graduation in Japan.（日本ではたいてい卒業式には普通の制服を着ます）
High school students usually wear their school uniform to the graduation ceremony
They wear their school uniform to the graduation
When you want to explain that in Japan high school students usually wear their school uniform to the graduation ceremony; then you may express this in the following ways:
-High school students usually wear their school uniform to the graduation ceremony
-They wear their school uniform to the graduation
日本では普通高校生は卒業式に制服を着ていくことは、次のように説明できます。
-High school students usually wear their school uniform to the graduation ceremony
（高校生は普通卒業式に制服を着ていきます）
-They wear their school uniform to the graduation
（卒業式には制服を着ていきます）
We usually wear our school uniform at graduation ceremonies in Japan.
Generally people dress in their school uniforms for graduation ceremonies in Japan.
Words like "usually" and "generally" are used to say that "most of the time" it is the case. However, they leave open the possibility that something different may occur.
南アフリカ 
アメリカ合衆国 
イギリス 
