Need To Knows For a Complete Primary Education

Universe
Galaxy
Star (There's several kinds, of which the smallest is a blue dwarf and the largest a red giant. The sun is a white dwarf. There's also collapsed stars called neutron stars and pulsars amd magnetars and black holes and way out in space there's quasars which are newly forming galaxies)
Planet
Moon\Dwarf Planet
Asteroid\Comet
Meteorite

Then 

Exosphere
(Thermosphere which I Forgot)
Mesosphere
Ozone Layer
Stratosphere
Biosphere (Troposphere)

Crust
Mantel
Outer Core
Inner Core

Molecule
Element
Atom
Electron
Proton
Neutron
Quark
Energy Kinetic and Potential
Acid 
Base

Asia
North America
South America
Africa
Europe
Australia
Antarctica

Pacific Ocean
Indian Ocean
Atlantic Ocean
Arctic Ocean

1776 Declaration of Independence
1492 Columbus Sailed the Ocean Blue

Helper Verbs
Indirect and Direct Object
Noun
Verb
Adjective
 Adverb
Conjunction
Interjection

PEMDAS
Line
Ray
Plane
Point
Square
Rhombus
Triangle (All Species)
Rectangle
Trapezoid
Quadrilateral
Pentagon - Decagon
Pythagorean Theorem

Cursive

Holocaust
American Civil War
World War I
World War II
American Revolution
Vietnam
9/11 and War in Iraq
Jim Crowe 
Slavery

Hitler
Martin Luther King Jr.
Julius Caesar
George Washington
Thomas Jefferson
Benjamin Franklin
Alexander the Great
Genghis Khan
Cyrus the Great
Attila the Hun
Alexander Graham Bell
Thomas Edison
The Wright Brothers
Rosa Parks
Harriet Tubman
Betsy Ross

The ability to read at the very least George Eliot and William Shakespeare, and comprehend it fully
MLA and APA citation
And some Roman and Greek History and Philosophy 

Every American child, should at the very, most absolute least know all of these correctly at the bare minimum, coming out of High School.
If not, the education system has failed.
And I'd also argue so much more.

Some Music Theory
Some Color Theory
Some Constellations and Stars
Some Geography
Exposed to the great Artworks
Some Mythology