Grade most commonly refers to:
*

Grade (education)
Grading in education is the process of applying standardized measurements for varying levels of achievements in a course. Grades can be assigned as letters (usually A through F), as a range (for example, 1 to 6), as a percentage, or as a numb ...

, a measurement of a student's performance
* Grade, the number of the year a student has reached in a given educational stage
Educational stages are subdivisions of formal learning, typically covering early childhood education, primary education, secondary education and tertiary education. The United Nations Educational, Scientific and Cultural Organization ( UNESCO) re ...

* Grade (slope)
The grade (also called slope, incline, gradient, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero in ...

, the steepness of a slope
Grade or grading may also refer to:
Music

* Grade (music), a formally assessed level of profiency in a musical instrument * Grade (band), punk rock band * Grades (producer), British electronic dance music producer and DJScience and technology

Biology and medicine

* Grading (tumors), a measure of the aggressiveness of a tumor in medicine * The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach * Evolutionary grade, a paraphyletic group of organismsGeology

* Graded bedding, a description of the variation in grain size through a bed in a sedimentary rock * Metamorphic grade, an indicatation of the degree of metamorphism of rocks * Ore grade, a measure that describes the concentration of a valuable natural material in the surrounding oreEngineering and technology

* Grade (fasteners), the grade of nuts and bolts refers to the strength and material * Grade (elevation at earth level), in architectural engineering, the elevation of the earth surrounding a building * Grading (earthworks), the preparation and leveling of land for construction, especially of roads and railways *Grade separation
In civil engineering (more specifically highway engineering), grade separation is a method of aligning a junction of two or more surface transport axes at different heights (grades) so that they will not disrupt the traffic flow on other ...

, aligning a junction of two or more transport axes at different heights to facilitate traffic flow
* Cetane rating, a measure of diesel fuel's combustion quality
* Octane rating
An octane rating, or octane number, is a standard measure of a fuel's ability to withstand compression in an internal combustion engine without detonating. The higher the octane number, the more compression the fuel can withstand before detonati ...

, also called gasoline grade, the measure of the autoignition resistance of gasoline (petrol) and other fuels used in spark-ignition internal combustion engines
* Grade of service In telecommunication engineering, and in particular teletraffic engineering, the quality of voice service is specified by two measures: the grade of service (GoS) and the quality of service (QoS).
Grade of service is the probability of a call i ...

, the quality of voice service in telecommunications
* Color grading
Color grading is a post-production process common to filmmaking and video editing of altering the appearance of an image for presentation in different environments on different devices. Various attributes of an image such as contrast, color, s ...

, the process of altering and enhancing the color of a motion picture, video image, or still image
* A rating of lumber
Lumber is wood that has been processed into dimensional lumber, including beams and planks or boards, a stage in the process of wood production. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, w ...

(timber) quality and strength
Mathematics

*Grade (angle)
In trigonometry, the gradian, also known as the gon (from grc, γωνία, gōnía, angle), grad, or grade, is a unit of measurement of an angle, defined as one hundredth of the right angle; in other words, there are 100 gradians in 90 degre ...

, a unit for the measurement of plane angles
* Graded (mathematics)
In mathematics, the term “graded” has a number of meanings, mostly related:
In abstract algebra, it refers to a family of concepts:
* An algebraic structure X is said to be I-graded for an index set I if it has a gradation or grading, i.e. a d ...

, with several meanings
* Graded poset
In mathematics, in the branch of combinatorics, a graded poset is a partially-ordered set (poset) ''P'' equipped with a rank function ''ρ'' from ''P'' to the set N of all natural numbers. ''ρ'' must satisfy the following two properties:
* The ...

, a partially ordered set equipped with a rank function, sometimes called a ranked poset
* Graded vector space
In mathematics, a graded vector space is a vector space that has the extra structure of a '' grading'' or a ''gradation'', which is a decomposition of the vector space into a direct sum of vector subspaces.
Integer gradation
Let \mathbb be t ...

, a vector space with an extra piece of structure
* Graded algebra
In mathematics, in particular abstract algebra, a graded ring is a ring such that the underlying additive group is a direct sum of abelian groups R_i such that R_i R_j \subseteq R_. The index set is usually the set of nonnegative integers or the ...

, an algebra over a field (or ring) with an extra piece of structure
Linguistics

* Grade, each of the "levels" ofvowel gradation
In linguistics, apophony (also known as ablaut, (vowel) gradation, (vowel) mutation, alternation, internal modification, stem modification, stem alternation, replacive morphology, stem mutation, internal inflection etc.) is any alternation wit ...

, especially in Indo-European
* Grade, or degree, one of the comparative forms of an adjective
Sport

*Grade (climbing)
In rock climbing, mountaineering, and other climbing disciplines, climbers give a grade to a climbing route or boulder problem, intended to describe concisely the difficulty and danger of climbing it. Different types of climbing (such as sport ...

, a climber's assessment of the difficulty and danger of climbing a hill
* Grade (bouldering)
In the sport of bouldering, problems are assigned technical grades according to several established systems, which are often distinct from those used in roped climbing. Bouldering grade systems vary widely in use and include the Hueco "V" grade ...

, a climber's assessment of the difficulty and danger of climbing a route which are distinct from those used in regular climbing
* Degree of difficulty
Degree of difficulty (DD, sometimes called tariff or grade) is a concept used in several sports and other competitions to indicate the technical difficulty of a skill, performance, or course, often as a factor in scoring. Sports which incorporate ...

, in several sports
* International Scale of River Difficulty, also called grade, a standardized scale used to rate the safety of a stretch of river, or a single rapid
Other uses

* Grade (crime), the degree of seriousness of a crime *Military rank
Military ranks are a system of hierarchical relationships, within armed forces, police, intelligence agencies or other institutions organized along military lines. The military rank system defines dominance, authority, and responsibility in a m ...

* Grade (surname) (includes a list of people with the name)
* Grade, Cornwall, a village in the UK
* Coin grading, the process of determining the grade or condition of a coin, the key factor in its value
* Food grading, the inspection, assessment and sorting of foods to determine quality, freshness, legal conformity and market value
* Pattern grading, the scaling of a pattern to a different size in the clothing or footwear industry
See also

*Gradient
In vector calculus, the gradient of a scalar-valued differentiable function of several variables is the vector field (or vector-valued function) \nabla f whose value at a point p is the "direction and rate of fastest increase". If the gradi ...

* Gradation (disambiguation)
* Rank (disambiguation)
* Rating (disambiguation)
A rating is an evaluation or assessment of something, in terms of quality, quantity, or some combination of both.
Rating or ratings may also refer to:
Business and economics
* Credit rating, estimating the credit worthiness of an individual, c ...

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