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School Uniform

School Uniform Policy

Where to purchase our uniform:

Dennis Uniform Company is Mercy High School’s exclusive uniform supplier. Uniforms are available on a customized Mercy High School webstore at You can use the webstore anytime to shop online and review our approved uniform guidelines on the Uniform Program Listing. You must create a Dennis account to shop online. You can also visit their store location at 1282 Oddstad Dr, Redwood City, CA 94063.

Our school code is mi0314.


Dennis Welcome Kit

Dennis Customer Care Center Hub

Dennis Webstore

Create a Dennis Uniform Account 

Uniform Expectations

Students on campus are expected to wear their school uniform. Formal Mercy uniforms will be expected to be worn by all students regardless of when they are on or off campus when we have special events such as prayer services and speakers. This expectation will be communicated in a timely manner to students. 

Uniform guideline HERE.

Used Uniforms

If you are interested in purchasing a used uniform, please contact

Day-to-Day Uniform

Skirt - Mercy plaid skirt may not be shorter than five inches above the top of the knee

Pants - Students must wear navy slacks (traditional classic cut or relaxed fit, chino style or Dockers style, cotton-twill). Pants must be boot cut or have a flare. No skinny pants or ripped pants allowed. Yoga pants, leggings, and jeans are not allowed.

Shorts - Navy Bermuda shorts are allowed as long as they are no shorter than five inches above the knee

Polo Shirt - White, grey Mercy polo only

Outerwear - Navy sweater, navy vest, and Mercy spirit wear are allowed. No non-Mercy sweatshirts and/or jackets are allowed except for rain jackets on rainy days.

Socks - White, black, navy, or gray socks may be worn. Socks with patterns and colors are not allowed.

Tights - Black or navy solid colored tights may be worn. Students may not wear leggings or tights with patterns in them.

Leggings - Solid black full length leggings with socks under skirt

Shoes - Predominantly white, navy, and black shoes may be worn with shoelaces of these colors. Navy blue is the only shade of blue that is allowed. Students may not wear slippers, Uggs, heels or moccasins. Rain boots may only be worn on rainy days.

Mercy Formal Uniform

Formal Uniform

Mercy students wear their full uniforms on special days such as liturgy days and formal assemblies. On full uniform days Mercy students must be in the following uniform:

• Mercy High School plaid skirt

• White polo

• Navy sweater

• Navy pants

• Black flat shoes

• White socks and black or navy solid color tights are optional. No other colors may be worn.

Free Dress

Free Dress days are every Friday and we will have additional days to celebrate special events.

  • Spaghetti straps are not allowed (straps must be at least 1-inch

  • Tops must be full length - covering the entire midriff and back

  • Ripped jeans are not allowed

  • Pajama bottoms are not allowed

Mercy outerwear such as sweatshirts and jackets can be purchased HERE or HERE.